Pump



March 22, 1927.

V. L. FORMWAY ET AL VII 'i'lllrlill'llll Patented Mar. 22, 1927.

tennis A 1 1 t1 t r e VERLA L. FORMWAY AND ROY F. FORM'W'AY, O13 RUBY, TEXAS.

PUMP.

Application filed July 23,

Our present invention pertains to pumps, and it contemplates the provision of a.double action pump of peculiar and advantageous construction.

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, forming part of this specification Figure 1 is a view partly in diametrical section and partly in elevation illustrating the best practical embodiment of our invention that we have as yet devised.

Figures 2, 3, 4, and 5 are transverse sections taken in the planes indicated by the lines 2 2, 33, 44 and 5-5, respectively of Figure 1.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

lVe show in Figure 1 a well tubing 14, and connected to the lower end of the well tubing 14 is the outer cylinder 16 of our improvement. Our improvement also comprises an inner cylinder 15 with a port 15*, Figures 1 and 4, and pistons 19 and 21 movable in the cylinder 15; the piston 19 being carried by a tubular rod 19 and the piston 21 being carried by a rod 21 which extends through and is movable in the tubular rod 19*. The space between the cylinders 16 and 15 is divided by upright partitions 30 into chambers 17 and 18, the chamber 13 being in communication with the port 15*. Car ried in the lower end portion of the outer cylinder 16 and surrounding the central opening 31 therein is an annular trap for sand and sediment, the precipitation of the sand and sediment into the said trap 32 lessening the liability of the same interfering with the working of the lower valves 29 and 49, Figures 1 and 5. The said valves 29 and 49 are carried by a valve frame 50, said frame 50 being ported as shown and being provided in its upper end with a threaded socket 51. This socket 51 is for the engagement of the lower threaded end 51 of the rod 21 as when it is desired to withdraw the valve frame 50 from the cylinder 15. Seated at 52 in the inner cylinder 15 is a valve frame 53 which is ported as shown and is equipped with valves 22 and 23. Manifestly the valve frame 53 may be withdrawn from cylinder 15 through the medium of the piston 19 and its tubular rod 19*, it being noticed in this connection that 1926. Serial No. 124,418.

the frame 53, Figures 1 and 2 is provided with a central tubular portion 53 and with a partition 42, and that the said tube 53 'is provided at its upper end with a packing nut 54*. The outer cylinder 16 is provided at 55 with a sand and sediment trapdeslgned to receive sand and sediment and in that way prevent the collection of the same interfering with the free action of the valves 22 and 23 complementary to the frame 53. It will be noted from Figure 1' that the cylinder 15 is provided with a port for effecting connection between the chamber 17 and the inner cylinder interior, and by comparison of Figures 1 and 3 it will be noticed that the upper end of the chamber 17 is closed at 61.

In the practical operation of our novel pump, the pistons 19 and 21 are by any appropriate means moved in concert in opposite directions. Consequently on the down stroke of the piston 19, the piston 21 is on the up stroke and vice versa. Therefore, incident to the downward movement of the piston 19, the piston 21 moves upwardly and expels water from the inner cylinder 15 inwater is forced up into the well tubing 14.

Also incident to upward movement ofthe piston 21 and downward movement of the piston 19, a vacuum will. be created in the chamber or compartment 17 and hence water will flow into said chamber 17, the valve 23 at that time being closed by the weight of the water in the well tubing 14. The valve 49, however, will be open, for the filling of the chamber 17 and also for the filling of the inner cylinder 15 above the piston 19 and below the piston 21. Incident to the reverse movement of the pistons 19 and 21, the valves 22 and 49 close and the valves 23 and 29 open so that a continuous flow of water to the well tubing 14 is maintained as is desirable.

It will be apparent from the foregoing that notwithstanding the capacity of function ascribed to our novel pump, the pump is simple and inexpensive in construction and in general is well adapted to withstand the usage to which pumps of corresponding character are ordinarily subjected.

lVe have entered into a detailed description of the construction and relative arrangement of the parts embraced in the present and preferred embodiment of our invention in order to impart a full, clear and exact understanding of the said embodiment. We do not desire, however, to be understood as limiting ourselves to the precise construction shown'and described, our invention being defined by our appended claims within the scope of which modifications may be made without departure from our invention.

Having described our invention, what we claim and desire to secure by Letters'Patent, 1s:

1. In a pump and in combination, an outer cylinder, an inner cylinder, said inner cylinder fixed with respect to the outer cylinder and provided with ports, lower and upper pistons adapted to be synchronously moved in opposite direction in the inner cylinder, a valve frame with ports removably arranged in the lower portion of the inner cylinder and spaced from the outer cylinder, a valve frame with ports removably arranged in the upper portion of the inner cylinder and spaced from the outer cylinder, Valves carried by said frames; the lower end of the rod of the lower piston being adapted for detachable connection to the lower valve frame and the said valve frame being also adapted for said detachable connection, means dividing the space between the outer and inner cylinders into chambers, and means dividing the upper valve frame into chambers.

2.111 a pump and in combination, an outer cylinder, an inner cylinder, said inner cylinder ported and the space between the inner and outer cylinders being divided into chambers, a valve frame in the lower portion of the inner cylinder and spaced from the outer cylinder, valves carriedby said frame, a valve frame in the upper portion of the inner cylinder and spaced from the outer cylinder, said latter valve frame being divided into chambers, valves complementary to the upper valve frame, and pistons movable rectilinearly in the inner cylinder and adapted to be synchronously moved in opposite directions.

3. In apump and in combination, an outer cylinder, an inner cylinder, said inner cylinder ported and the space between the inner and outer cylinders being divided into chambers, a valveframe in the lower portion of the inner cylinder, valves carried by said frame, a valve frame in the upper portion of the inner cylinder, said latter valve frame being divided into chambers, valves complementary to the upper valve frame, and pistons movable rectilinearly in the inner cylinder and adapted to be synchronously moved in opposite directions; the outer casing containing a sand and sediment trap about the lower valve frame and also containing a sand and sediment trap about the upper valve frame.

I. In a pump and in combination, an outer cylinder, an inner cylinder, said inner cylinder ported and the space between the inner and outer cylinders being divided into chambers, a valve frame in the lower portion of the inner cylinder, Valves carried by said frame, a valve frame in the upper portion of the inner cylinder, said latter valve frame being divided into chambers, valves complementary to the upper valve frame, and pistons movable rectilinearly in the inner cylinder and adapted to be synchronously moved in opposite directions; the lower and upper valve frames being surrounded by sand and sediment traps and the lower and upper valve frames being in connection with one of the chambers between the inner and outer cylinders, and the valve frames being also in communication with the interior of the inner cylinder and both lower and upper valve frames being in communication with the other chamber between the outer and inner cylinders.

In testimony whereof we affix our signatures.

VERLA L. FORMWVAY. ROY F. FORMWAY. 

